In the klicksafe expert talk on the topic of "Preventing extremism", we speak to psychologist and extremism expert Ahmad Mansour. In his youth, the Palestinian-Arab Israeli experienced a phase of radicalization himself and belonged to an Islamist group. After experiencing an attack, he moved to Germany in 2004 and has been involved in the prevention of extremism for many years. In the klicksafe expert talk, he explains how we can protect young people from extremist propaganda on the internet.